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LM4930 - Audio Subsystem

General Description

The LM4930 is an integrated audio subsystem that supports voice and digital audio functions.

The LM4930 includes a high quality I2S input stereo DAC, a voice band codec, a stereo headphone amplifier and a high-power mono speaker amplifier.

Key Features

  • an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an two-wire interface for control. The full range music path features an SNR of 86dB with a 16-bit 48kHz input. The stereo DAC can also be used while the voice codec is in use. The headphone amplifier delivers 25mWRMS to a 32Ω single-ended stereo load with less than 0.5% distortion (THD+N) when AVDD = 3V. The mono speaker amplifier delivers up to 300mW into an 8Ω load with less.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM4930 Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers July 2003 LM4930 Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers General Description The LM4930 is an integrated audio subsystem that supports voice and digital audio functions. The LM4930 includes a high quality I2S input stereo DAC, a voice band codec, a stereo headphone amplifier and a high-power mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices. The LM4930 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an two-wire interface for control. The full range music path features an SNR of 86dB with a 16-bit 48kHz input.